Switched from using urllib2 to requests.

urllib2 is a security hazzard, it does not perform certificate checks against a trust root by default, nor does it perform service_identity checks.

Also, requests has a prettier API.
Use the older requests API
Set the content-type header and use POST, which the ACME spec requires
Change CONFIG to point to an ACME server with valid trusted certificate
Merge branch 'master' of github.com:letsencrypt/lets-encrypt-preview
Merge pull request #2 from alex/use-requests

Switched from using urllib2 to requests.
docstrings and add JSON pretty-printing code
Removed trailing whitespace as well as unused imports
Merge pull request #11 from alex/trailing-whitespace-unused-imports

Removed trailing whitespace as well as unused imports
Merge branch 'master' into setuptools-installable

Conflicts:
	setup.py
Merge branch 'master' into setuptools-installable
Remove trustify/attic related code from setup.py